Skip to content

Get United's best fares today on flights from Seattle to St. Louis from

Select journey type

Enter to select travel class and passengers

Low fare calendar for flights from Seattle (PAE) to St. Louis (STL)

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
No available results
25
No available results
26
No available results
27
No available results
28
No available results
29
No available results
30
No available results
31
No available results
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from Seattle to St. Louis?

FromToDatesFare TypePrice

Seattle (SEA)

St. Louis (STL)

Depart: 12/21/19

12/28/19

Roundtrip
from
$882*

Seattle (SEA)

St. Louis (STL)

Depart: 11/28/19

12/12/19

Roundtrip
from
$416*

Seattle (SEA)

St. Louis (STL)

Depart: 11/29/19

12/13/19

Roundtrip
from
$344*

Seattle (SEA)

St. Louis (STL)

Depart: 12/01/19

12/15/19

Roundtrip
from
$679*

Seattle (SEA)

St. Louis (STL)

Depart: 12/02/19

12/16/19

Roundtrip
from
$531*

Seattle (SEA)

St. Louis (STL)

Depart: 12/05/19

12/19/19

Roundtrip
from
$401*

Seattle (SEA)

St. Louis (STL)

Depart: 12/04/19

12/18/19

Roundtrip
from
$309*

Seattle (SEA)

St. Louis (STL)

Depart: 11/30/19

12/14/19

Roundtrip
from
$476*

Seattle (SEA)

St. Louis (STL)

Depart: 12/06/19

12/20/19

Roundtrip
from
$436*

Seattle (SEA)

St. Louis (STL)

Depart: 12/03/19

12/17/19

Roundtrip
from
$279*

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in St. Louis

Wednesday few clouds
69°F 10/23/19
Thursday moderate rain
50°F 10/24/19
Friday light rain
47°F 10/25/19
Saturday light rain
50°F 10/26/19
Sunday sky is clear
64°F 10/27/19
Monday moderate rain
45°F 10/28/19
Tuesday scattered clouds
39°F 10/29/19
Powered by: OpenWeatherMap.org